-up c-- ccc ccf cck ccp ccs ccu cfc cff cfk cfp cfs cfu ckc cks cpc cpf cpk cpp cps cpu csc csf csk csp css csu cuc cuf cuk cup cus cuu fcc fcf fck fcp fcs fcu ffc fff ffk ffp ffs ffu fkc fkf fkk fkp fpc fpk fpp fps fpu fsc fsf fsk fsp fss fsu fuf fuk fup fus fuu kcc kck kcp kcs kcu kfc kff kfs kfu kkc kkk kkp kks kku kpc kpf kpk kpp kps kpu ksc ksf ksk ksp kss ksu kuc kuk kup kus kuu p-p pcc pcf pck pcp pcs pcu pfc pff pfk pfp pfs pfu pkc pkf pkp pks pku ppc ppf ppk ppp pps ppu ps- psc psf psk psp pss psu puc puf puk pup pus puu scc scf sck scp scs scu sfc sff sfk sfp sfs sfu sk- skc skf skk skp sks sku spc spf spk spp sps spu ss- ssc ssf ssk ssp sss ssu suc suf suk sup sus suu ucc ucf uck ucp ucs ucu ufc uff ufp ufs ufu ukc ukf ukk ukp uku up- upc upf upk upp ups upu usc usf usk usp uss usu uuc uus uuu